Turbo-Back Tuner: Recommended only if you are planning a chip upgrade, intake upgrade or turbo upgrade. Replaces the flattened OEM downpipe and steps up to 4" tubing and 3.5" downpipe, eliminating the OEM flange. Look for significant gains in all performance areas.

1-888-DIESEL-4

Hours-EST

This product is not legal for sale or street use in California. Certain aftermarket products are subject to governmental emission standards regulated by the California Air Resources Board. In order for these products to be legal on a specific vehicle in California, the part number must receive a CARB Executive Order (EO) number. This number makes the part legal for use only on specific years, makes and models of vehicles. A decal with CARB EO number for these parts must be displayed in the engine bay to satisfy smog inspection requirements.